(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*

This guide provides a more detailed description of the syntax that is supported along with examples.

This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.

Concept Search - What can I type?

For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.

Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.

Publishing Venue

Related People

Abstract

Babbage's expectations for his Difference Engine were those of a young enthusiast. Although he failed to complete his version of the engine, an independent implementation of his ideas was carried through by Georg and Edvard Scheutz Two Scheutz engines were built and put to work, one at the Registrar-General's Office in London and one at the Dudley Observatory in Albany, M Y. They performed as intended, but failed to revolutionize the making of mathematical tables as Babbage had hoped they would.

Babbage's expectations for his Difference Engine were those of a young enthusiast. Although
he failed to complete his version of the engine, an independent implementation of his ideas was
carried through by Georg and Edvard Scheutz Two Scheutz engines were built and put to work,
one at the Registrar-General's Office in London and one at the Dudley Observatory in Albany, M Y. They performed as intended, but failed to revolutionize the making of mathematical tables as
Babbage had hoped they would.

When Babbage was 45 years old, he wrote, but did not publish, a description of the Analytical
Engine. Here he showed vision verging on genius. His judgment on the design and utility of the
Analytical Engine was a sound as his judgment on matters concerned with the Difference
Engine was weak. Studies by A. G. Bromley, based on an examination of his notebooks, have
brought out his remarkable achievements at what we would now call the microprogram level
and also the insights that eluded him at the user level. His failure to publish may have been
because he never arrived at what he regarded as a satisfactory system for programming at the
user level.

In Passages from the Life of a Philosopher (1864) Babbage records that one day, while still a
student, he was sitting in pensive mood in the rooms of the Analytical Society with a book of
logarithm tables open before him. Another member entering asked him what he was dreaming
about. He replied "I am thinking that all these tables might be calculated by machinery." What
exactly did he mean by this?

Those who have seen Babbage described as the Father of the Computer, but otherwise know
nothing of his work, will see no problem; clearly, a computer can be used to compute
mathematical tables. However, the claim for Babbage to be Father of the Computer derives
from his work on the Analytical Engine. The anecdote belongs to a period long before he had
thought of the Analytical Engine and was only just beginning to develop his ideas for the earlier
machine that he called the Difference Engine.

The Difference Engine would generate polynomials by the method of differences. This has
application to mathematical tables since, across a certain number of entries, a table, such as
the table of logarithms that Babbage had open in front of him, can be represented by a
polynomial. This remains...